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Head-to-head comparison · Jump Starters

NOCO GB40 vs GB70

The GB40 covers gasoline engines up to 6.0 L; the GB70 doubles the peak current and adds diesel engines up to 6.0 L.

By · Updated

This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.

Our pick: NOCO Boost HD GB70 Jump Starter

Why the NOCO Boost HD GB70 Jump Starter wins

Buy the GB70 if you drive a diesel or a large gasoline engine, or live where winters are hard. For a gasoline car or crossover the GB40 is enough.

Prices change often. Check the current price and availability on Amazon.

Check Latest Price on Amazon (paid link)
Image: NOCONOCO Boost Plus GB40 Jump Starter
Editorial score:8.2/10

NOCO Boost Plus GB40 Jump Starter

A 1,000-amp lithium jump starter rated for gasoline engines up to 6.0 L and diesel engines up to 3.0 L.

Image: NOCONOCO Boost HD GB70 Jump Starter
Editorial score:8.5/10Our pick

NOCO Boost HD GB70 Jump Starter

A 2,000-amp lithium jump starter rated for gasoline engines up to 8.0 L and diesel engines up to 6.0 L, with a 12 V output.

Side-by-side

Specs compared

SpecificationNOCO Boost Plus GB40 Jump StarterNOCO Boost HD GB70 Jump StarterOur pick
Editorial scoreEditorial score:8.2/10Editorial score:8.5/10
Best for——
Peak current1,000 A2,000 A
Gas enginesUp to 6.0 LUp to 8.0 L
Diesel enginesUp to 3.0 LUp to 6.0 L
Jump starts per chargeUp to 20Up to 40
USB output5 V, 2.1 A5 V, 2.1 A, plus a 12 V, 15 A output
Recharge time3 hours at 2 A, 6 hours at 1 A3 hours at 2 A, 6 hours at 1 A
Flashlight100 lumens, 7 modes400 lumens, 7 modes
Water and dust ratingIP65 with ports closedIP65 with ports closed
Weight2.4 lb4 lb (5 lb with clamps and accessories)
Dimensions6.7 x 3.2 x 1.7 in—
Warranty1 year1 year
Battery capacity—56 Wh
Where to buyCheck Latest Price on Amazon (paid link)Check Latest Price on Amazon (paid link)

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At a glance

Key differences

  1. 1Peak current: 2,000 A for the GB70, 1,000 A for the GB40.
  2. 2Gas engines: up to 8.0 L against 6.0 L.
  3. 3Diesel engines: up to 6.0 L against 3.0 L.
  4. 4Jump starts per charge: up to 40 against up to 20.
  5. 5Weight: 4 lb against 2.4 lb.

Product by product

Pros and cons

Model GB40

NOCO Boost Plus GB40 Jump Starter

The sensible default for a gasoline car or SUV. Diesel truck owners should step up to the GB70.

Pros

  • Covers most cars, crossovers and half-ton trucks with gasoline engines up to 6.0 L
  • Spark-proof clamps and reverse-polarity protection
  • IP65 housing and a compact 2.4 lb body
  • Up to 20 jump starts per charge, by NOCO's figures

Cons

  • Diesel rating stops at 3.0 L, too small for most diesel pickups
  • A 1-year warranty is short for this category
  • Works with 12-volt lead-acid batteries only
Check Latest Price on Amazon (paid link)Full review
Model GB70

NOCO Boost HD GB70 Jump Starter

The one to buy for trucks, diesels and anyone who wants margin in cold weather. For a small gasoline car, the GB40 is enough.

Pros

  • Rated for diesel engines up to 6.0 L, which covers many diesel pickups
  • Up to 40 jump starts per charge from a 56 Wh battery
  • 12 V, 15 A output for tire pumps and other 12-volt accessories
  • Brighter 400-lumen flashlight and the same IP65 housing as the GB40

Cons

  • Heavier than the GB40: 4 lb against 2.4 lb
  • A 1-year warranty is short for this category
  • Works with 12-volt lead-acid batteries only
Check Latest Price on Amazon (paid link)Full review

Choose the NOCO GB70 if

  • Your vehicle has a diesel engine up to 6.0 L or a gasoline V8.
  • You want a 12 V, 15 A output to run accessories.

Choose the NOCO GB40 if

  • You drive a gasoline car, crossover or half-ton truck up to 6.0 L.
  • You want a starter small enough for the glovebox.

A note on cold weather

Engines are harder to crank in the cold. If your engine is close to a model's limit, step up a size.

Frequently asked questions

What is the difference between the NOCO GB40 and GB70?
The GB70 has 2,000 A against 1,000 A, covers gasoline engines up to 8.0 L and diesels up to 6.0 L, and gives up to 40 starts per charge against 20.
Will the GB40 start a diesel truck?
Only diesels up to 3.0 L, according to NOCO. Most diesel pickups need the GB70 or larger.
Which is lighter?
The GB40, at 2.4 lb against 4 lb.

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